Expanding mill roll



Dec. 15, 1931. J. v. MAZURIEy EXPANDING MILL ROLL l Filed Dec. 4, 1929 2sheets-sheei 1 Inventor:

JS'MES K MHZUE/E,

ay. y

Dec. V15, 1931. .1. v. MAzURlE l 1,837,168.

EXPANDING MILL ROLL 4l g ,56 .55 4o .5f

P- .55 LJ" 5a a 55 4Z, 4l l v Inventor: 4?@ f4/m55 K Maza/eve',

'iti

the* roll mounting Patented Deals,

` UNITED. STATES PATl-:N'rol-FICE uns v. munmwor (may, INDIANA mutismemtr. nou.

Application mednember 4, 192s. senin No. 411,536.

This inventionrelates to expanding machines used inthe manufacture ofseamless tubes and more particularly to the rolls of said machines andhas for its object the provision of a novel mounting whereb said rollsmaybe quickly attached to an from the roll-shafts. 1 V

Another object is to rovide a novel mounting whichwill secure yholdthe-roll on the shaft without weakening the shaft or roll byproviding boltl holes 1n said parts as has been necessary in themounting heretofore generally used. ln the drawings ligure 1 is a planview of an expanding machine'constructed in accordance with thisinvention. l

Figure 2 .is an enlarged` detail sectional elevation through one of theunits of the machine showing the roll-shaft mounting.

igure 3 is asectional elevation takenon the line III-III of Figure 2. i

lligure 4 isa fragmentary detail showing on the shaft. Referring moreparticularly to the drawings, the letters A and B designate the rollunits which go to make up thev mill and which are of duplicateconstruction. l'

'lhe units A and B each comprises a' base 2 on which is mounted ahousing bed-plate 3 supporting a housing 4.

he houslng 4`is provided with bearing receiving openings 5, 6 and 7. Theopenings and 6 are adapted to receive bearings 8 and 9 in which aroll-shaft 10 is journaled. The shaft 10 is reduced in diameter at itshearing points, as at 12 and 1,3, forming shoulders 14 at each end ofthe bearing points. viihe bearings 8 and 9 are divided longitudinally toform two parts whichy are tted around the reduced diameter portions 12land 13 of the shaft land said be shaped to snugly fit between the 14 andthereby be held against nal movement relative to the shaft. The hearings8 and 9 l1ave avsliding lit in the housing openings 5 and 6 andtherefore the shaft 10 and bearings 8 and 9-may be bodily' movedrelative to the housing in a diarings are shoulders detached hlongitudirection arallel with the longitudinal axis of the shaft. Athrust-bearing assembly comprising a housing 15 and disks 16, 17 and 18is slidably mountedl in the, opening 7 in the unit ousing. The rear endof the shaftlOextends into the tends freely through the bearing disks 16and .18. The disk 17 ismounted on a reduced end 19 of the shaft andclamped against a shoulder20by anut 21. v The rear end of the bearinghousing is closed by a thrust-p1ate'22 which is engaged Iby a threadedthrust-bar 23 which is threaded into the hub of a worm-wheel 24journaled in abearing opening 25 inthe housing 4 and adapted to berotated 4to move the thrustbar 23 against or away from the-thrust-plate,22 to thus adjust the longitudinal position of the roll-shaft 10.

he worm-wheel 24 is in mesh with a worm 26 carried by a shaft 27 whichis journaled in the housing 4 and is provided at its outer endl with agear 28 which is meshed with a pinion 29 on the armature shaft 30 of areversing motor 31.

It will thus be understood that the roll'- shaft 10 may be readilyadjustedy longitudinally by energizing the motor 31 which will cause arotation of the wormwheel 24 which, in turn, serves'r'as a nut to movethe thrustbar23 toward or Iaway from the thrust bearing, which bearingment of the shaft 10. i

In order tofrotate the rollshaft 10 a gear is keyed or otherwise securedon the shaft 10 between the bea-rings 8 and 9, and said gear is'in meshwithL a drive-pinion 46 carriedby a. shaft 47 which The roll 34 a sleeveportion, 35 adapted to over the stub 33 and the sleeve 35 terl' nl matesin a peripheral liange 36 of the same dlameter as the flange 32 on theshaft 10.

bearing housing 15 and exsupporting stub 33 extends' limits the endwisemove' Sli is connected by a y flexible coupling 48 with the armatureshaftv e usual frusto-conical type is l withguidewaygrooves The faces ofthe-ianges 32 and 36 are parallel and abut each other. InK4 order toprevent rotation of the roll 34 relative to the shaft 10, the abuttingfaces of the flanges 32 and 36 are slotted to form key-ways 37 in whichkeys 38 are mounted.

The roll 34 is adapted to be removably held against displacement on theshaft 10 y an at leasttwo-part clamping ring 39 which is grooved toprovide flanges 40 extending down over the peripheral flanges 32 and 36of the roll 34 and roll-shaft 10.

The parts of the ring 39 are provided with bolt lugs 41 to receive bolts42 Vfor securing the ring parts together. Set-screws 42'L` are providedfor locking bolts 42 against displacement.

It will ,be readily appreciated that the above construction permitsquick change of the rolls and at the same time provides a secure andpositive mounting.

It is necessary during the operation of the mill on different sizes ofpipes to adjust the vertical position of the rolls 34 and heretor forethis hasbeen accomplished by adjusting the roll-shaft bearingsvertically. c In the present construction, the roll-shaft bearings androll shaft are so mounted that their vertical'positionrelative to th'ehousing is fixed and the` vertical adjustment of the rolls isaccomplished by adjusting the complete housing 4 and its assembled partsvertically.

' Inj-order to tically and thereby change the vertical positioning ofthe roll 34, the base 2 is provided 51 adjacent each end lin each ofwhich are mounted a pair of oppositely positioned wedge-shaped adjusting40 'blocks 52. The housing bed-plate 3 is provided with bearing plates53 immediately which plates above each of the grooves 51,

adaptare provided with bearing surfaces 54 ed tobe engaged by theadjusting blocks 52 and inclined reversely to the inclined taper of theblocks 52. Y v y When the blocks 52 are moved toward each l other theyact aswedges against the inclined surfaces 54 of the plates 53`andelevate blocks are moved away from each other the weight of theV housing4 and its assembled mec anism will cause thesurfaces 54of the plates 53to ride down along the-blocks 52 and thereby lowef. the housing andassembled mechanism. 1

.In order to provide a simultaneous adjustment of all o the members orblocks 52 of each unit, each block is provided with a nut 55 which is inthreaded engagement with a screw-shaft 56. Each of the shafts -56 is oouled to a shaft 57 having a worm-wheel ereon which'is meshed with a worm59. The worms 59, in turn, have their shafts coupled to a connectingshaft 60 and the rear thus adjust the housing 4 ver or lift the housing4 vertlcally and when said shafts 56 will be rotated to move the blocks52 in or out and thus raise or lower the housing 4 and roll 34 accordingto the direction of rotation of the motor.

It will be readily appreciated that the roll mounting as provided inthis machine may be readily' assembled or disassembled. Vhen it isdesired to remove the roll, it is only necessary to loosen theset-screws 42a and remove l the bolts 42 after which the roll 34 may bereadily slipped from the shaft l0.

When mounting the roll 34 it is slipped onto the stub 33`of the shaft l0and the slots in the flange 36 of the roll are brought into registrywith the slots in the flange 32 of the 'shaft to form the key-Ways 37'and the keys 38 are mounted therein. The ring 39 is then assembled overthe flanges 32-36 and locked in position by the bolts 42.

vWhile I have `shown and described one specific embodiment of myinvention it will be understod that I do not wish to be limited theretosince various modifications` may be made without departing from thescope of my invention, as defined in the appended claims.

1. In an expanding mill for expanding seamless tubes, a housing, aroll-shaft journaled in said housing, said shaft having its roll endprojecting materially from said housing, a peripheral flange formed onsaid projecting end of said shaft at a point inward from the endthereof,a roll mounted on the projecting end of said shaft, said rollhaving `a sleeve portion adapted to receive the end of said shaft, aperipheral flange on the end of said .sleeve portion of approximatelythe samediameter as said flange on said shaft, said flanges beingabutted, means for preventing relative rotation of said roll and saidshaft, and means cooperating with said flanges fon removablylocking saidroll against displacement from said shaft.

2. In an expanding mill for expanding seamless tubes, a housing, aroll-shaft journaled in said housing, said shaft having its roll endprojecting materially from said locking-ring adapted to be fitted oversaid abutted anges and locked in ppsition to prevent displacement ofsaid roll.`\

ROC

'said shaft, and an at least two-part grooved 3. In an expanding millfoil expanding seamless tubes, a housing, .a roll-shaft jour- C'naled insaid housing, said shaft having its roll end projecting materially fromsaid housing, a peri 4heral ange formed on said prov jecting en of saidshaft at a point inward from the end thereof, a roll mounted on theprojecting end of said shaft, said roll havin a sleeve portion adaptedto receive the end o said shaft, a peripheral flange on the end of saidsleeve portion of approximately the Same diameter as said flange on saidshaft, said flanges being abuttedTfkey-ways in said flanges, keys inYsaidy key-ways adapted to f5 prevent relative rotation of said rolland' said shaft,land an at least two-part grooved 1ooking-ringadaptedtobe fitted/over said abutted flanges and looked in position toprevent displanement of said ro f zo, 4. In an expanding mill forexpandingl seamless tubes, a housing, a roll-shaft jour- 'naled in saidhousing, said shaft having its roll end projecting materially from saidhousing, a peripheral flange formed' on said projecting end ofsaid'shaft at a point inward from the end thereof, a roll mounted on-the projecting end ofv said'shaft, said roll having a sleeve portionadapted to receive the end of said shaft, a peripheral fiange on the 30.end of said sleeve portion of 'approximately the same diameter as saidflange on said shaft, said iian es being abutted, key-ways insaidflanges, eys in said key-ways adapted to prevent relative rotation ofsaid roll and said shaft, an at least two-part grooved locking ringadapted to be fitted over said abutted iianges, said ring parts beingprovided with lugs adapted to abut each other when said ring isassembled, bolts mounted in apertures 40 in said lugs forl locking saidringlparts toe, gether, and means for locking said bolts againstdisplacement. l

In testimony whereof, I have hereunto set \myhand. v, y JAMES V.MAZURIE.

